package byf.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

public class JdbcUpdate {
    public static void main(String[] args) throws Exception {
        Class.forName("com.mysql.jdbc.Driver");
        String url ="jdbc:mysql://localhost:33306/test?useSSL=false";
        String username = "root";
        String password ="root";
        Connection connection = DriverManager.getConnection(url,username,password);

        Statement statement = connection.createStatement();
        String sql="update user set username='wjj'where id=4";
        int i = statement.executeUpdate(sql);
        if(i>0){
            System.out.printf("修改成功");
        }

    }
}
